Water Quality Analysis

Water quality analyzers are used for monitoring process chemistry including water quality, providing process optimization and control. Common measurements include pH, ORP, conductivity, resistivity, dissolved oxygen, chlorine, salinity, ozone and corrosion rate.

Water quality analysis is essential for protecting capital assets including boilers and cooling towers, by preventing corrosion, minimizing maintenance, and maximizing uptime.

Apure is a recognized world leader for reliable liquid analytical equipment, providing accurate and repeatable solutions for maintaining and controlling even the most demanding process applications with unparalleled ease of operation.

Obtaining accurate pH and ORP measurements from your analyzer and interpreting this data correctly is critical to ensuring product quality and making accurate predictions of sensor lifetime. Optimizing your OPEX.

Apure is a recognized world leader for reliable conductivity equipment, providing credible and repeatable measurement solutions for maintaining and controlling even the most demanding process applications.

Apure offers dissolved oxygen (DO) analyzer that works with the three common technologies for dissolved oxygen measurements: polarographic, galvanic and optical. Commonly used in aquaculture industry.

Chlorination is one of sterilization method in drinking water and industrial water, and chlorine measurement is very important to secure water quality. You can find the best solution thanks to unique Apure technologies proven by experiences.

Turbidity analyzers was developed for controlling and monitoring drinking water, a turbidity measurement is also required in wastewater plant more and more to achieve sustainable society. Provide safe water and save water pollution.

Salinity Meter is an instrument used to quickly determine the concentration or refractive index of saline solution by weight. Widely used in salt, food, beverage and other industrial sectors and agricultural production.

Ozone meter is the principle of ultraviolet absorption method, with stable ultraviolet light source to produce ultraviolet light, with light wave filter out other wavelengths of ultraviolet light, only allow wavelength 253.7nm through.

Corrosion is the most costly type of loss. Corrosion is caused by chemical and electrochemical reactions of metallic materials with environmental media (operating media, water, steam, air, gas, gas, and other analogues).

Apure’s Control Range delivers a modular technical solution for the Water Treatment & Industrial Process markets. Included parameters are: pH, ORP, Conductivity, Dissolved oxygen, Turbidty, Salinty, Amonia Nitrogen, Temperature, etc.

Various forms of chlorophyll are bound in the living cells of photosynthetic organisms, such as phytoplankton and blue-green algae. The amount of chlorophyll found in a water sample is used as a measure of phytoplankton concentration.

Blue-green algae (BGA), also known as cyanobacteria, are photosynthetic bacteria that can grow in fresh and marine water and can be blue, green, red in color. Apure measures blue-green algae in real time through in vivo fluorescence technology.

To describe the organic load of water, the standard parameters COD (chemical oxygen demand) and DOC (dissolved organic carbon) and TOC (total organic carbon) or BOD (biochemical oxygen demand) are used. COD is the most important standard parameter.

Ammonium or its uncharged form, ammonia is a form of nitrogen that aquatic plants can take up and bind to proteins, amino acids and other molecules. High concentrations of ammonium can promote the growth of algae and aquatic plants.

Nitrates and nitrites are compounds that contain nitrogen and oxygen. Both nitrate and nitrite molecules contain one nitrogen atom. Nitrites have two oxygen atoms, while nitrates have three oxygen atoms. Nitrification generated by ammoxidation nitrite, finally produce nitrate.

Apure’s fluoride meter is one of the optional ion-specific electrodes (ISE) compatible with Apure’s multi-parameter water testing equipment. The fluoride ISE is used to measure the concentration and activity of fluoride in aqueous solutions. It is less intrusive than other methods.


Water quality analysis is also called hydrochemical analysis. That is to use chemical and physical methods to determine the content of various chemical components in water. Water quality analysis can be divided into three types: simple analysis, complete analysis and special analysis. Simple analysis is carried out in the field with few analysis items, but the requirements are fast and timely, which is suitable for preliminary understanding of the main chemical components of groundwater in various aquifers in a large area. Special analysis projects are determined according to the needs of specific tasks. For example, in hydrochemical prospecting, high-precision spectrometers are used to focus on the analysis of certain metal ions sought, and in water radioactivity determination, certain radioactive elements are analyzed.

Water quality monitoring is the premise to ensure safe water use, the quality of drinking water is directly related to people’s health, so in every production link of domestic water must be strictly checked, do a good quality sampling survey, only the water can be delivered to the water supply network.

Source water quality testing
The quality of water source is the source that affects water quality. In the process of water plant production, it is necessary to closely monitor the change of water quality, timely and accurately grasp the characteristics of water quality, so as to facilitate the timely adjustment of subsequent treatment and smooth operation. Most groundwater needs to be treated properly, even if specially treated, to meet drinking or industrial water standards. The reasons are as follows: first, the dissolution of minerals in the formation causes the dissolution of some elements in the water to exceed the allowable concentration; Second, human activities caused groundwater pollution, resulting in excessive iron, manganese. Iron and manganese are essential trace elements for human body. Water quality contains an appropriate amount of iron and manganese, which is beneficial and harmless to human body. But the human body long-term intake of excessive iron and manganese, can cause chronic poisoning, induce some diseases.

Water quality inspection of water supply pipe network
At every stage of drinking water production, strict quality control is carried out before it is transmitted to the water supply network. However, this does not mean that the drinking water provided to users can ensure full compliance with drinking water sanitation standards, since drinking water, as a special commodity, has its own characteristics. After drinking water leaves the factory, users are transported through numerous water supply pipes. In the process of continuous transportation of drinking water, there are many factors affecting the secondary pollution of water quality, such as pipeline leakage repair, pipeline quality problems, the impact of secondary water supply facilities, direct pollution caused by users’ illegal water, etc.

Water is the source of life, tap water needs to be tested before the water plant, in the production process of each link is also tested and monitored. After treatment, enterprises need to discharge water to meet the standards. The monitoring platform needs to monitor the detected data to meet the standards.

Water quality monitoring is mainly a process of monitoring and measuring the types of pollutants in water, the concentration and change trend of various pollutants, and evaluation of water quality.

Monitoring purposes

  1. Surface and ground water – regular monitoring.
  2. Production and living process — surveillance monitoring.
  3. Accident monitoring — Emergency monitoring.
  4. Providing data and information for environmental management.
  5. Data and information for environmental scientific research.

General water high quality will depend on exactly how various features such because turbidity plus pH (among others) are usually measured in accordance to condition regulations.

There are many ways in order to measure fundamental amounts of drinking water quality. This particular is primarily done nearest the drinking water source, the kind of “live” testing. Drinking water quality right here is based on measuring or even taking drinking water samples plus testing all of them for level of acidity (pH), colour, dissolved o2 and turbidity (a way of measuring suspended contaminants in the particular water). This kind of tests offer water providers having a fundamental, general meaning of water conditions.

Samples are also collected, such as suspended matter, bottom sediments or biota. These samples are often taken back to a laboratory or sent to a laboratory for physical, chemical and microbiological analysis. Concentrations of metals, nutrients, pesticides and other substances are measured in the laboratory. The laboratory analyzes water samples from the public water Supply System (PWS) and provides PWS with details about its water quality. Types of water samples and purposes of analysis: Analyze source water samples to check for contamination and determine general water quality characteristics that affect the treatment process; Analyze process water samples to provide key information related to process optimization;

Another way to get indicators of water quality is through biological testing. For example, the test determines whether water or sediment is toxic to life forms, or whether there are usually fluctuations within the quantity and types of plants plus animals. A few of these biological assessments are carried out within the laboratory, although some fundamental tests are usually done within streams or even lakes.

  1. Installation of water processor
    The practical method that improves water quality one of, install a practical tap water processor to oneself. Modern society science and technology is developed, if you feel that the filtration method of tap water plant is not reliable, you can install tap water processor for secondary purification of tap water, so that you no longer worry about water quality problems, at ease with water.
  2. Heating distillation
    The second practical method to improve water quality is to heat and distill tap water from a pot on fire. Generally speaking, when anything reaches 100 degrees Celsius, the bacteria in the body will be destroyed by the heat, and the same is true for tap water. If you think tap water quality is not good or not pure enough, you can try, after heating before drinking. Tap water is safe to drink because it becomes pure distilled water when heated to the highest temperature.
  3. Activated carbon filtration
    The third practical way to improve water quality is to filter tap water with activated carbon. Activated carbon is a substance that can improve water quality and be used over and over again. To know that activated carbon has the role of softening water, and making a filter is also very convenient, only need rope, bottle, sponge, activated carbon can be. In addition, take the activated carbon out every three to six months, let it dry in a dark place and heat it for 30 seconds. This will reactivate the activated carbon before it can be used again.

Content of the water quality parameters include: pH, COD, BOD, SS, ammonia nitrogen, nitrate, nitrite and volatile phenol, cyanide, arsenic, mercury, chromium (6), total hardness, lead, cadmium, iron, manganese, fluoride, total soluble solid, permanganate index, sulfate, chloride, coliform bacteria, as well as the main water quality problems reflect the region of other projects. Water quality short for water quality. It marks the physical (such as chroma, turbidity, odor, etc.), chemical (inorganic and organic matter content) and biological (bacteria, microorganisms, plankton, benthic organisms) characteristics and composition of the water. A series of water quality parameters and standards are stipulated to evaluate water quality. Such as domestic drinking water, industrial water and fisheries water quality standards.

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